P3480 code meaning
Cylinder 10 Exhaust Valve Control Circuit High
Powertrain system Generic code P34xx codes Check engine light
What P3480 means
If the control line of the cylinder 10 exhaust valve actuator is held near supply voltage, the engine computer stores P3480. No manufacturer documents this code publicly; J2012 reserves the codes for cylinders 9 to 12 for engines with more than eight cylinders. A ten-cylinder engine has no cylinder 11 or 12, so P3480 is the last exhaust-valve code a V10 could ever use; the R8 V10 still does without it because its shut-off works through injection and ignition. Sorting out a high circuit means looking for a wire chafed against a feed, a backprobe left in a connector, or a coil with shorted windings. P3477 (open) and P3479 (low) are the other electrical faults of this actuator, P3476 the intake equivalent on cylinder 10.
P3480 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modeNot expected
- Repair difficultyMedium, DIY possible
- Typical labor0.5 to 4 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P3480
- Check engine lamp on
- Cylinder shut-off disabled
Common causes of P3480
- PossibleExhaust actuator wire of cylinder 10 shorted to a feed
- PossibleShorted windings in the exhaust actuator coil
- Less likelyEngine control module output defective
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Cylinder deactivation solenoidWiring harnessECM
What each part of P3480 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 3 | Mixed range: generic and manufacturer-specific codes. |
| 4 | Area: auxiliary emission controls (catalytic converter, EGR, EVAP). |
| 80 | The exact fault in that area. |
What to do next
- Note P3480 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P3480
What does P3480 mean?
P3480 means "Cylinder 10 Exhaust Valve Control Circuit High". If the control line of the cylinder 10 exhaust valve actuator is held near supply voltage, the engine computer stores P3480. It is a generic code, so it means the same on every make.
Is it safe to drive with P3480?
Usually yes, for a short time, if the check engine light is steady and the car drives normally. If the light flashes or the car runs badly, stop and have it checked.
Will P3480 fail an emissions test?
Yes, it can. P3480 is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P3480 to fix?
Difficulty: medium. A typical repair takes 0.5 to 4 hours of work. A careful DIY repair is possible with basic tools and a scanner.
Will P3480 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.